{"id":"CVE-2026-69544","title":"Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.","summary":"Heap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-122"],"vendor":"Microsoft","product":"Windows 11 version 26H1","affected":["windows_11_version_26h1 >= 10.0.28000.0 < 10.0.28000.2954"],"published":"2026-09-08","updated":"2026-09-09","sourceUpdated":"2026-09-09T10:19:12.620","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-69544","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69544","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-09T04:18:59.900304Z"},"ingestedAt":"2026-09-08T19:08:49.615Z","epss":0.00318,"epssPercentile":0.25034,"slug":"CVE-2026-69544","body":"## Overview\n\nHeap-based buffer overflow in Windows SMB Client allows an authorized attacker to elevate privileges locally.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}